compiler/clib/write.c

   1 /*
   2     Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     ANSI C function write().
   6 */
   7
   8 #include <errno.h>
   9 #include <dos/dos.h>
  10 #include <dos/dosextens.h>
  11 #include <proto/exec.h>
  12 #include <proto/dos.h>
  13 #include "__stdio.h"
  14 #include "__errno.h"
  15 #include "__open.h"
  16
  17 /*****************************************************************************
  18
  19     NAME */
  20 #include <unistd.h>
  21
  22         ssize_t write (
  23
  24 /*  SYNOPSIS */
  25         int          fd,
  26         const void * buf,
  27         size_t       count)
  28
  29 /*  FUNCTION
  30         Write an amount of characters to the specified file descriptor.
  31
  32     INPUTS
  33         fd - The file descriptor to write to
  34         buf - Write these bytes into the file descriptor
  35         count - Write that many bytes
  36
  37     RESULT
  38         The number of characters written or -1 on error.
  39
  40     NOTES
  41
  42     EXAMPLE
  43
  44     BUGS
  45
  46     SEE ALSO
  47
  48     INTERNALS
  49
  50 ******************************************************************************/
  51 {
  52     ssize_t cnt;
  53
  54     fdesc *fdesc = __getfdesc(fd);
  55     if (!fdesc)
  56     {
  57         errno = EBADF;
  58         return -1;
  59     }
  60
  61     cnt = Write ((BPTR)fdesc->fcb->fh, (void *)buf, count);
  62
  63     if (cnt == -1)
  64         errno = IoErr2errno (IoErr ());
  65
  66     return cnt;
  67 } /* write */
  68